一种新颖的应用于无线局域网的小型化单极子天线

A Novel Compact Monopole Antenna for WLAN Applications

给出了一个新颖的三频工作的单极子天线,并可以应用于无线局域网。这个天线由对称结构和地板组成,它们分别印刷在介电常数为4.4、厚度为1.6 mm的FR4介质板的两面,并且采用微带线的馈电方式。这个天线有着小型化的尺寸26 mm×20 mm×1.6 mm。测量结果显示,低频和高频的-10 dB阻抗带宽分别为2.3-2.5 GHz和4.7-6.8 GHz;这个带宽覆盖了2.4/5.2/5.8 GHz无线局域网工作频段。同时得到了较好的全向方向图。这个天线的低频和高频的平均增益分别为2dBi和3.7dBi。

A novel monopole antenna with dual-band operation for wireless local area networks(WLAN) is presented in this article.The antenna is composed of symmetrical strips and a ground plane on the other side,both printed on an FR4 substrate with a dielectric constant of 4.4 and a substrate thickness of 1.6mm,and is fed by a microstrip feedline.The antenna has a compact dimensions of 26 mm×20 mm×1.6 mm.The measured results explore broadband dual-frequency operation with -10db impedance bandwidths range from 2.3 to 2.5 GHz and 4.7 to 6.8 GHz,which cover the 2.4/5.2/5.8 GHz WLAN operating bands.Also,good omnidirectional radiation patterns have been achieved.The antenna has an average gain of 2dBi in lower band and 3.7dBi in higher band.